The bases were loaded when ball met bat and sailed over the fence at Simi Valley High.
Hank Robinson, 62-year-old coach of the Southern California Baseball Assn. team that benefited from the hit, wasn't impressed.
"Yeah, well, the dimensions at Simi are short," Robinson said. "And that lefty served it right up."
Everyone else was astonished, however, because it was Robinson trotting around the bases. He had slugged the grand slam off a pitcher young enough to be his grandson.
Robinson only takes a couple of cuts a year, but he supervises the swings of many of the best high school players in the Valley area.
During the SCBA season, which ran from September to February, Robinson's roster included Dave Milstein, Shaun Murphy, Devon Herron, Dave Sullivan and Scott Sharts from Simi Valley, Grant's Rodney Beck and Jason Peterson, Westlake's Matt Franco and Jim Henderson, Polytechnic's Tim Hunt and Providence's Jeff Cirillo.